some special features are that they glow
stunging
The tenticals!
Jellyfish, corals, and box jellies
That it has no special features.
some of the special features of the penguin is it slides on its stomach, its flippers, and its webbed feet
The box-jellyfish is special from all the other jelly-fish because, it doesn't drift but actually moves. All of the other jelly-fish just drift with the current, they are not moving. The box-jellyfish is actually not a jelly-fish. It is just called a jellyfish for its jellyfish appearance not for it truthfully being a jellyfish.
oxygen
its coloure
Galaxies
volcano's
it has smooth skin and it has tentacles
some of the special features of the penguin is it slides on its stomach, its flippers, and its webbed feet